Count lines | Count Your Lines Quickly
Use our Count Lines tool to find the total number of lines in any text. Paste your content for instant results.
Analysis Results
Quick Tips
- Drag and drop a .txt, .csv, .log, .md or code file directly onto the input area to load it instantly.
- Press Ctrl + Enter (Cmd + Enter on Mac) to re-run the analysis.
- Use the transformation buttons (sort, dedupe, remove empty) to clean a list before counting.
- The Line endings field tells you whether the file uses Unix LF, Windows CRLF or classic Mac CR — useful when debugging cross-platform files.
- Reading time uses an average of 225 words per minute — a research-backed pace for adult silent reading.
Real-time analysis
Sixteen metrics — total lines, empty, non-empty, duplicates, words, sentences, paragraphs, reading time and more — recompute as you type.
Deep text statistics
Average / longest / shortest line, longest word, unique-word count and Unix vs. Windows line-ending detection.
One-click transformations
Remove duplicates, sort, reverse, trim whitespace, strip empty lines or add line numbers — applied directly to the input.
Drag-and-drop file load
Drop any .txt/.csv/.log/.md/.json/.xml/.html/.css/.js/.py/.sql file (up to 5 MB) directly into the editor.
Half-million-character capacity
Handles up to 500,000 characters in the browser — enough for full chapters of a book, large logs or 10,000-line CSVs.
Fully private
All processing happens in your browser. Nothing is uploaded, logged or persisted.
Code analysis
Count SLOC (lines of code), spot empty/duplicate lines and review average line length before a refactor.
Writing & editing
Hit a word count, estimate reading time and check sentence pacing for an article, blog post or essay.
Data cleaning
Drop a CSV, dedupe lines, sort alphabetically and re-export — perfect for cleaning email lists or address dumps.
Email / SMS templates
Verify your message stays inside character limits with the Characters and Characters (no spaces) counters.
Log inspection
Quickly tell how many lines a log file contains, how many are blank, and whether the line endings match your platform.
SEO and content audits
Word count, paragraph count and reading time — the three metrics every content audit checklist asks for.
This tool also exposes a free JSON API and a Model Context Protocol (MCP) server, so AI agents and scripts can call it directly without scraping the page. No signup, no API key, CORS open.
curl -X POST https://mate.tools/api/v1/count-lines.php \
-H "Content-Type: application/json" \
-d '{"text":"line one\nline two\n\nline four"}'import urllib.request, json
req = urllib.request.Request(
"https://mate.tools/api/v1/count-lines.php",
data=json.dumps({"text": "line one\nline two\n\nline four"}).encode(),
headers={"Content-Type": "application/json"},
)
with urllib.request.urlopen(req) as r:
print(json.load(r)["metrics"])const r = await fetch("https://mate.tools/api/v1/count-lines.php", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ text: "line one\nline two\n\nline four" }),
});
console.log((await r.json()).metrics);